[He really can't argue with her there; everything she just said was perfectly true, even if what he did technically was fixing it. Not for either of them though, clearly. He swallows hard and nods a bit.]

No, I'm not. I can tell you I won't willingly do it, but I can't guarantee it won't. The universe will have one very angry Doctor to deal with. Might actually destroy it myself. [If the Time Lord Triumphant was anything to go by.]